If `(-3)/7=x/(35),` then `x=` (a)15 (b) 21 (c)`-15` (d) `-21`

If x^(3)+(1)/(x^(3))=110, then x+(1)/(x)=5 (b) 10 (c) 15 (d) none of these

If 4x+5y=83 and (3x)/(2y)=(21)/(22), then y-x=?( a) 3( b) 4 (c) 7 (d) 11

If the mode of the data: 16 ,\ 15 ,\ 17 ,\ 16 ,\ 15 ,\ x ,\ 19 ,\ 17 ,\ 14 is 15 , then x= (a) 15 (b) 16 (c) 17 (d) 19

If x=3+i, then x^(3)-3x^(2)-8x+15 = (A) 6 (B) 10 (C) -18 (D) -15

If the mean of 6,\ 7,\ x ,\ 8,\ y ,\ 14 is 9, then (a) x+y=21 (b) x+y=19 (c) x-y=19 (d) x-y=21

The value of x in the equation (113xx4-xx x2)/(13xx9-5xx7)=5 is (a) 21(b)27(c)35 (d) 42

If (4)/(7) of 49% of x is 21, then x=125 (b) 9884 (d) 75

Solve (21.5)/(5)+(21)/(6)-(13.5)/(15)=(((?)^((1)/(3)))/(4))+(17)/(30) (a) 2( b) 8( c) 512 (d) 324 (e) None of these

If x=-3, then x^(3)-x^(2)-x will be equal to -33(b)-27(c)15(d)54

The L.C.M.and ratio of four numbers are 630 and 2:3:5:7 respectively.The difference between the greatest and least numbers is (a) 6quad (b) 14 (c) 15 (d) 21